Keep kettle at __ temp for __ minutes

Useful for applications that require sanitized water.

Example voice command: "Set kettle to 95°C for 5 minutes."

Bonus feature: Notify user when the temperature cools back down to a target temperature.

Example voice command: "Set kettle to 95°C for 5 minutes then notify when it reaches 50°C"

Useful applications:

• Sanitizing water for neti pot
• Sanitizing water for cool mist humidifier
• More eco-friendly holding duration for the easily distracted user
• Sanitizing water then cooling to an appropriate temperature for a water bath (e.g. for yogurt making, rising dough, proofing yeast, etc)